Fibrous bodied container



July 9, 1935. w. L. RUTKOWSKI FIBROUS BODIED CONTAINER Filed June 8, 1933 I N VEN TOR. WZZZfE/Z. fZai/fawa/ii s A TTORNEY.

Patented July 9, 1935 UNITED STATES FIBROUS BODIED CONTAINER 7 Walter L. Rutkowski, Normandy, Mo., assignor to R. Q. Can Company, St. 'L

tion of Missouri ouis, Mo., acorpora- Application June 8, 1933, Serial emma 7 4 Claims.

J Myinvention relates to containers, and more particularly to what is known as paper bodied cans adapted to contain dry products, such for instance, as powders, spices and other products,

A 5 5 and the purpose of the invention is to provide the ring, at its upper edge, with an outwardly.

extending flange, orflanges, to serve as means on the ring to engage the end of the container to limit inward movement of the ring therein.

h Afurther object of the invention is to provide the ring equipped end of the container with a suitable closure.

The object of the use of the internal friction ring is to reinforce the end of the can body without securing the ring thereto, other than'fric- -tionally, so that the end portion of the body will not shrink in size to cause the closure to become loose in its fit on the end of the container, thus always assuring a tight fit of the closure on the container and to maintain the shape of theend of the container and its outer dimensions.

I "An object of the invention is to improve the "present paper, or fibrous containers used to carry :dry products, powdered or otherwise. i i Another object is to provide a paper, or fibrous container reinforced at its removable closure end and to permit a closure to be readily applied and provide a tight fit and be readily removed.

Another object of the invention is to prevent deformation of the removable closure end, or endsof paper or fibrous containers during fill- :ing, or otherwise, and thereby facilitatethe application of caps, or closures thereto without fear ,of' their becoming loose upon. the can body end, ,or ends. r

IA further object of the invention is to provide .an inexpensive-paper container to which a suitable slip cover may 'bereadilyapplied. A still-further object of the invention is the provision of a container which possesses advantages in points of simplicity and eflici'ency, and, l at the same time proves itself comparatively inl expensive in cost of manufacture. r

l Containers of the character hereindescribed .are used in very large quantities for packing and shipping spices, powders and other dry products, and it has been customary to supply the cheap grades with paper caps or ends, and the better grades at tile bothfends i with' metal closures, a

the metal being secured to theusual tubular body by crimping it on 'to," or otherwise interlocking the metal and thefpaperbody, This requires expensive machiner'y'a't they place of packing the containers" to attach the metal, closures or tops to the containerb'odies and in so doing the paper material of the body is ruptured.

By the present invention, it ispossible to apply a metal'closure of an approved type and shape to a paper bodiedcamwithout damaging the body in any. way','.' the f -ricti'on'; ring used in cooperation therewith serving to strengthen rather than weaken the container. Further, the friction ring canbe attached to the body without any ma: chinery, likewise, the cap or end closure.

The invention will be more fully described in connection: with, the accompanying drawing, in which;

Figflljis. an elevation view of a container embodying .the invention, 'p 7 and parts being'shown in section. Fig.'2 is adetail sectional view of one end of the can bodyembodying theihvention with the closure removed.

Fig. 3 is a topplan view of acontainer with k the friction ring applied ther removed. f

Fig. 4 is a perspective view of the internal friction ring and. oneend of a can body, the parts being .in spacedrelation.

Fig. 5 is an enlarged fragmentary sectional view of the internal friction ring in position on a can body end. a V 7 Fig. 6 'is an enlargedfragmentary sectional view friction ring in eto. and. the closure of a inodifiedform' of internal position on a can body en d. V 1 r Fig. '7 is a detail in perspective of a container with anordinary flat top slip cover partly in section' appliedthereto and showinga portion of the friction ring.- Fig. 8 ispa modification of the internal fric- .tionring shown in Fig. 6.

Referring to the drawing, I have shown in Fig. 4 1, acontainer designated generally as A, the body .1 thereof being preferably formed of any suitable fibrous material, such as paper and the like, and in the usual well known manner. One end of the container is illustrated as provided with a fixed metallic end closurelalthough it may be a removable closure, if, sodesired. The opposite, or top end of the container body I is shown as provided witha suitable closure, such as a slip cover 3 having asifter top 4. Any approved type of. closure 3 can be used, ,as is manifest. One

arts being broken away I modified type of closure is shown in Fig. '7 and designated 3'.

Such containers have been, and are now used for various purposes with a slip cover telescoped about one, or both ends thereof.

An internal friction ring designated generally as B, is employed and it has a vertical wall 4. The wall 4, as clearly shown in Figs. 3 and 4, is provided at one edge with a plurality of spaced outwardly extending flanges 5 and an inwardly extending flange 6 at the opposite edge thereof. The maximum external diameter of the friction ring wall 4 is sufficient to permit the ring to be easily but frictionally forced into'the container body I, as shown in Figs. 1, 2, 4 and 5. Both ends of the container body can, of course, if so desired, be friction ring equipped if the use of a slip cover is desired at both ends of the container. The use of the inwardly extending flange 6 stiffens the ring considerably more than a ring without the inward flange, however, an inward flange is not absolutely necessary, as will be apparent from Fig. 6. However, some sort of flange, or stopping means, is preferable on one edge of the wall 4 of the ring to prevent the ring from working itself downwardly out of its useful position at the end, or ends, of the container body I.

It is readily apparent that the internal friction ring B can be easily manually applied to one, or both ends of the container body, and removed from the container without rupturing the body material, as the ring B is not secured to the container body other than by frictional contact with the inner face of the container body wall I.

The rounding off of the outer edge of the container wall end, as at 1, facilitates the application of the closure 3 thereto, and the removal thereof therefrom, and without rupturing or tearing the edge of the end of the container body I.

The present invention provides an inexpensive I container to which metallic caps or closures may be readily applied and which closures due to the use of the internal friction ring B, provides for a tight flt of the closure due to the ring B retaining the shape and size of the end of the container body I. The containers can be made thin walled, due to the fact that the friction ring B supports and reinforces the end of the container body, thereby eliminating deformations at this part of the container body I. The metallic friction ring B can be readily made of a definite size and shape to fit any shape of container body and because of its strong character will resistv the many stresses placed upon it when handling the container with or without the closure thereon, and when filling the container and discharging contents therefrom.

The friction ring equipped end of the container body will retain its proper shape so that the slip cover 3 may be readily applied thereto, and the wall portion I of the container body I between the wall 4 of the ring B and the skirt 8 of the closure 3 will serve as a gasket to provide for a tight joint both between the ring wall 4 and'the paper body wall and the closure skirt 8 and the paper body wall, thus powder within the can is held against leakage therefrom, even when pressure is applied to the wall of the container when the closure 3 is applied thereto. The application of the friction ring B to the container is such that the container is not weakened in any way, but in fact strengthened and reinforced as the paper body material is not weakened or ruptured by the forcing of ring edges into the paper material reducing the thickness of the paper material at such points.

The container is strong and durable in character and fully capable of withstanding the rough usage to which it may be subjected, without fear of the closure becoming so loose in fit as to permit the leakage of powdered contents from the can through the joint established between the skirt of the closure and the paper body of the container.

As will be apparent from the modification shown in Fig. 6, the outwardly extending flange designated 5 is shown as continuous and in the modification shown in Fig. 8, an internal friction ring such as shown in Fig. 6, is outwardly indented, as at 9, to offer resistance to any possible chance of the friction ring slipping outwardly out of position within the containerbody.

One, or both ends of the paper can body I, can have a portion of the body wall, designated I, heat treated under pressure so as to compress the material thereof to a uniform outside diameter and to round off the outer edge of the body end, as at 1. This reduces the rough edge at the end, or ends of the body I, and facilitates the application of a closure 3 to the container body. The end, or ends I of the container body I being heat treated within the confines of a recessed member, electrically heated, serves to provide the container end with a substantially uniform outside diameter, as wherein the can end, or ends, are not heat treated under pressure, the paper wall stock will vary in thickness, thus causing the cover to fit tight at one point and loose at another point even with the use of the internal friction ring. However, the friction ring can, if desired, be used with a can body which has not had its ends heat and pressure treated.

Fibrous container bodies to which the internal friction ring B is applicable may be elliptical, square, round, oblong, or of any other shape and the container may be of any size.

The many advantages of the herein described invention will readily suggest themselves to those skilled in the art to which it appertains.

From the foregoing description, it is evident that a simple device for this purpose has been disclosed, but it is to be understood that I do not desire to restrict, or limit myself to the very details of the construction shown and described, which is merely illustrative, it being obvious that changes, not involving the exercise of invention,

may be made without conflicting or departing from the spirit of the invention within the scope of the appended claims.

What I claim is:

l. A container having, in combination, a fibrous tubular body, an internal metallic friction ring applied to one end of the container, said friction ring having an outwardly curved upper edge adapted to seat on the upper inner edge portion of the container body to form, in conjunction with the upper outer edge of the container body, a rounded oifupper end for the body to facilitate the placing of a slip cover to afford a tight fit to said end of the container body.

2. A container having, in combination, a flbrous tubular body, an internal metallic friction ring applied to one end of the container, said friction ring having an outwardly curved upper edge adapted to seat on the upper inner edge portion of the container body to form, in conjunction with the upper outer edge of the container body, a rounded off upper end for the body to facilitate the placing of a slip cover to afford a tight fit to said end of the container body and the lower edge of said slip ring being flanged inwardly.

3. A container having, in combination, a fibrous tubular body, an internal metallic friction ring applied to one end of the container, said friction ring having an outwardly curved upper edge adapted to seat on the upper inner edge portion of the container body to form, in conjunction with the upper outer edge of the container body, a rounded off upper end for the body to facilitate the placing of a slip cover to afiord a tight fit to said end of the container body and the wall of the slip ring being indented outwardly to penetrate the container body after the ring is applied to one friction ring having opposed outwardly curved flangeson the upper edge thereof adapted; to seat on the upper inner edge portion of the container body to form, in conjunction with the upper outer edge of the container body, a rounded off upper 10 end for the body to facilitate the placing of a. slip cover to afford a tight fit to said end of the container body.

WALTER L. RU'I'KOWSKL 

